thanks for your post.
729 rules is a lot. FuzzyLite can handle that gracefully, but the problem you are having might be that none of the rules apply for the given set of input values. If you post or email me your FLL, I could check your engine next week.
As for the 64 bits, please download https://www.microsoft.com/en-nz/download/details.aspx?id=48145 and try again.